Hey ppl.

I have recently been assigned the task of generating a thermistor digital circuit without an AD.


What it will be is a comparator with inputs from (varying PWM) out of a PIC & the input from the thermistor

The comparator will be linked back into the PIC and calculate whether the temperature is higher or lower.




Ive scoured the web but I can't find any schematics for the circuit.

Does anyone know where I could find one relating to tackling the problem similar to this way?


Many Thanks,
Ryan.